Update Tutorial.rst

Tutorial.rst

 Getting Started on the ISC design
 =================================
 To redo the A1 ISC design, it wll be necessary to understand:
-1. the physcs of laser nterferometry
-1. moulaton / emodulaton fos signal extraction
-1. feedback loops (MIMO & SISO)
-1. how to use Fnesse/pyKat to smulate these thngs
+
+#. the physcs of laser nterferometry
+#. moulaton / emodulaton fos signal extraction
+#. feedback loops (MIMO & SISO)
+#. how to use Fnesse/pyKat to smulate these thngs
 
 How does Finesse work?
 =======================
-https://dcc.ligo.org/LIGO-G1901578
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+https://dcc.ligo.org/LIGO-G1901578
+
+
+Howto / Syntax on .RST files:
+-----------------------------
+https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html
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